US 12,068,687 B2
Method to reduce overshoot in a voltage regulating power supply
Wei Han, Shanghai (CN); and Lili Chen, Shanghai (CN)
Assigned to Advanced Micro Devices, Inc., Santa Clara, CA (US)
Filed by Advanced Micro Devices, Inc., Santa Clara, CA (US)
Filed on Oct. 15, 2021, as Appl. No. 17/502,272.
Prior Publication US 2023/0124434 A1, Apr. 20, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01); H02M 1/08 (2006.01)
CPC H02M 3/158 (2013.01) [H02M 1/0029 (2021.05); H02M 1/08 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A method for operating a system including a voltage regulating power supply, the method comprising:
sensing a local voltage on a first node of the system and a remote voltage on a second node of the system, the first node and the second node being in a conductive path between an energy absorbing element and a load of the system, the first node being closer to a power stage of the voltage regulating power supply than the second node, the second node being closer to the load than the first node; and
detecting a load release event based on the local voltage, the remote voltage, and at least one predetermined threshold value; and
in response to detection of the load release event, disabling a pulse-width modulated control signal provided to the power stage and enabling a circuit to sink energy from the voltage regulating power supply while the pulse-width modulated control signal is disabled.